[CIFS] Avoid extra large buffer allocation (and memcpy) in cifs_readpages
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c011c27..862e403 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -285,6 +285,7 @@
unsigned endOfSearch:1;
unsigned emptyDir:1;
unsigned unicode:1;
+ unsigned smallBuf:1; /* so we know which buf_release function to call */
};
struct cifsFileInfo {
@@ -420,7 +421,12 @@
#define MID_RESPONSE_RECEIVED 4
#define MID_RETRY_NEEDED 8 /* session closed while this request out */
#define MID_NO_RESP_NEEDED 0x10
-#define MID_SMALL_BUFFER 0x20 /* 112 byte response buffer instead of 4K */
+
+/* Types of response buffer returned from SendReceive2 */
+#define CIFS_NO_BUFFER 0 /* Response buffer not returned */
+#define CIFS_SMALL_BUFFER 1
+#define CIFS_LARGE_BUFFER 2
+#define CIFS_IOVEC 4 /* array of response buffers */
/*
*****************************************************************